Airtac BSAID Clamp Cylinder BSAID80X450S
The AirTAC Airtac BSAID Clamp Cylinder BSAID80X450S is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 450mm stroke and a spring-applied, air-released clamp-lock that holds the rod at ANY position along its travel — with a static holding force of 3600 N.
- BoreØ80 mm
- Stroke450 mm
- Cylinder portG3/8
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM20×1.5
About the Airtac BSAID Clamp Cylinder BSAID80X450S
The AirTAC BSAID80X450-S is a double-acting ISO 15552 profile cylinder featuring a rod out both ends and a built-in spring-applied, air-released clamp-lock mechanism. It secures the load at any position along the 450 mm stroke, delivering a static holding force of 3600 N. Because it is a double-rod unit, the thrust is equal in both directions at 2268 N (pull at 0.5 MPa). It is crucial to distinguish holding force from thrust: the 3600 N clamp rating is the capacity to hold a static load, entirely separate from the 2268 N pneumatic force that moves the rod.
A key reason to select this double-rod layout is dual-side functionality: you can mount the workpiece on one end and a position flag or counterweight on the other, achieving anti-rotation guidance. The clamp uses a third G1/8 enclasp port and requires a balanced 0.15-0.7 MPa pressure to unlock safely. Note that the variable air cushion only decelerates the piston near stroke ends; the clamp is the true holding device. The clamp locks only after the rod stops, so it cannot brake a moving load.
Airtac BSAID Clamp Cylinder BSAID80X450S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID80X450S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 450 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G3/8 |
| Rod thread | M20×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 3600 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC BSAI datasheet (ISO 15552). Operating pressure is 0.15–0.7 MPa (lower than a plain SAI). Port options: PT / G.
How the Clamp-Lock Holds
static holding force (Ø80 mm)
A spring-applied gripper clamps the rod and holds the load at any position in the stroke — not just at the stroke end (that is a SAIL) — and it is bidirectional: it holds whether the rod was extending or retracting.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa (max) | 3519 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (3600 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID80X450S Is Used
Vertical Axis Mid-Stroke Hold
Freezes a 80 mm double-rod vertical axis at any point in its 450 mm travel, relying on the 3600 N static clamp rather than live air pressure to prevent a dropped load.
Dual-Side Machining Fixture
Uses the rod out both ends to mount a workpiece on one side and a counterweight on the other, locking the assembly securely for intermediate inspection.
Power Loss Safety Hold
The spring-applied clamp engages automatically if air pressure drops, holding the load anywhere in the stroke until balanced unlock pressure is restored.
Is the Airtac BSAID Clamp Cylinder BSAID80X450S the Right Clamp-Lock?
Choose this 80 mm bore if you need equal 2268 N force both ways alongside a 3600 N static hold. If your load is lighter, the 63 mm bore offers 1402 N thrust and a 2200 N hold; for heavier loads, the 100 mm bore provides 3681 N thrust and a 5500 N hold. This BSAID model beats a stroke-end-only SAIL lock when you must freeze the load mid-travel, while a plain SAID suffices if no holding is required. Because the stroke is 450 mm, the 25 mm carbon steel rod and M20x1.5 thread carry good side-load capacity, but an external guide is still recommended for unsupported lengths.
For replacement, verify the double-rod configuration, 80 mm bore, 450 mm stroke, and PT-threaded 3/8 cylinder ports. The enclasp port is G1/8. The -S magnet works with AirTAC CMSE (reed) and DMSE (electronic) sensors. Mounting is limited to Basic, FA, LB, TC, TCM1, and TCM2 (omitting FB, CA, CB, CR). Remember: the clamp locks only after the cylinder stops, it cannot brake a moving rod, and it must unlock with balanced pressures to prevent the rod from jumping abruptly. Safety-critical loads need an independent backup measure.
Quick checklist
- ✓ Hold needed at any position?
- ✓ Or stroke-end only → use SAIL
- ✓ Holding force ≥ your load
- ✓ Balanced-pressure unlock circuit
- ✓ Extra safety measure for people
Airtac BSAID Clamp Cylinder BSAID80X450S FAQ
The built-in clamp-lock provides a static holding force of 3600 N. It is spring-applied and air-released, meaning it holds the load at any position without live pressure, separate from the 2268 N pneumatic thrust.
The clamp unlocks only when air pressure on both sides of the piston is balanced and the cylinder has stopped. If pressures are unbalanced, the rod can jump abruptly upon release. It locks only after the rod stops and cannot brake a moving load.
Related AirTAC Lock & Standard Cylinders
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